mcnish



UNITED STATES PATENT OFFICE.

H. L. MCNISH, OF LOWELL, MASSACHUSETTS, ASSIGNOR TO HIMSELE AND D. C. BUTLER, OF SAME PLAGE.

BARREL-HEAD MACHINE.

Specification of Letters Patent No. 30,378, dated October 9, 1860.

To all whom t 'may concern:

Be it known that I, H. L. McNIsrI, of Lowell, in the county of Middlesex and State of Massachusetts, have invented a new and Improved Machine for Cutting Heads for Barrels, Casks, &c.; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, forming part of this specification, in which- Figures 1 and 2 are sectional elevations of my invention; Fig. 3, a plan or top View of the same; Fig. 4, a diagram showing the adjustments of the saw.

Similar letters of reference indicate corresponding parts in the several figures.

The object of this invention is to obtain a machine by which barrel and cask heads may be cut in elliptical form to compensate for the shrinking of the same and also by a very simple adjustment cut of triiiing varying diameters to suit the ends of the barrel or cask in which they are to be fitted; the invention also admitting of heads being cut to suit barrels or casks of different dimensions and also admitting of the adjustment of the driving shaft of the clamp-rotating mechanism in different positions so that the parallelism of the saw shaft and the shaft of the clamp-driving mechanism may always be preserved when the machine is in operation and both of the shafts aforesaid driven from one and the same counter shaft.

To enable others skilled in the art to fully understand and construct my invention I will proceed to describe it.

A, represents a vertical and hollow castmetal support through which at about its center there passes a horizontal shaft B, having at one end a loaded treadle C. To the center of the shaft B, there is attached an arm D, the lower end of which is connected b v a link a, to the lower end of a lever E, which has its fulcrum at o, within the support A. The upper end of lever E, is`

forked, extends above the support A, and is connected to a horizontal shaft F, which has a wheel G, at its end said wheel having spurs c, near its periphery as shown in Figs. 1 and 3. The shaft F, is allowed to slide in its bearings d, d, and on its outer part a toothed bevel wheel H, is placed and attached thereto by a feather and groove to admit of the shaft sliding through the hub of wheel H, and still enabling the wheel H, to turn the shaft F. i

Into the lower part of the wheel H, a bevel pinionI, gears, said pinion being at the upper end of a shaft e, which is fit-ted within a tubular upright f, attached to the support by horizontal arms g, as shown clearly in Fig. 1. On the lower end of the upright f, there is fitted a horizontal bar J, to the outer parts of which pendent bearings z, are attached, in which bearings a shaft K, is placed said shaft having a pinion i on it which gears into a toothed wheel L, attached to the lower end of the shaft e.

On one end of the shaft K, a band wheel M, is placed loosely and is connected with said shaft K, by means of a clutch g', the wheel M, being moved on its shaft and engaged with or disconnected from its clutch g, by means of a lever N, and rod L, as shown in Figs. 1, and 3.

The bar J, is fitted loosely on the lower part of the tubular upright f, and is allowed to turn thereon and it may be secured in any desired position in the path of its rotation by means of a set screw z", shown in Fig. 1.

From the above description it will be seen that the shaft K, may be turned around to different points and secured in any position in the plane of its movement by screwing up the set screw z".

To the upper part of the support A, there is secured a horizontal plate O, which has a' dovetail recess in its inner side to secure a bar P, which is slotted longitudinally and has a slide Q, fitted in it said slide being adjusted by a screw R, see Figs. 2, and 3.

To the ends of the bar I), a curved bar S, is attached and to one end of the bar S, there is secured a rod T, which rod passes through a ledge j, at the back of plate O, and has a spring U, on it, said spring being of india rubber or other suitable elastic material. The spring U, has a tendency t0 keep the slide Q, in contact with a cam V, which is placed on a shaft W, the bearing 7c, of which is on the top of plate O. The cam V, is of slightly elliptical form the major liameter being indicated by the line Z, in

*ion 2. Y

Dn the inner end of shaft'4 WV, there is placed a wheel X, between which and the wheel G. the stuff Y, to be `cnt is placed.

Z, represents a horizontal plate on which the bearings n, of the saw shaft A', are placed. The saw B', which is placed on one end of the shaft A', is of dish form as shown clearly in Fig. 3, and on the shaft adjoining the inner and concave side of the saw there is a head C', having cutters pfatta'ched, see Figs. l, and 3. The plate Z, is secured to a horizontal circular plate D', by a screw bolt g, which is attached to the plate D', and passes up through an oblong longitudinal slot 7', in the -plate Z. The screw bolt g, is the fulcrum ofthe plate Z, and the plate may be shifted on its fulcrum or bolt g, by relaxing its nut adjusting the plate to the desired point and then screwing up the nut. The circular plate D', is attached to the curved bar S, by means of an eccentric bolt s, which passes through an oblong slot in the bar S.

To the end of the plate Z, the end opposite to that which adjoins the saw B', there is connected one end of a toggle E', the opposite end of said toggle being fitted on a rod t, which is secured in an oblong curved slot u, in the bar S. Y v

F', F', are rods the upper endsI of which are bent at right angles to the other parts and serve as rests for the stuft1 while being clamped. These rods F', are placed one at each side of the sup ort A, one being attached to the treadle and the other to the shaft B. The back end of the treadle C, has a weight G', attached, which weight has a tendency to keep the rests F', in proper positionto support the stuil Y, when the wheel G, is out from the wheel X. The support A, has a vertical slot or opening ax, to receive the lower parts of the wheels G, X, and stuff Y.

The operation is as follows: The shaft K, and saw shaft A', are rotated from one and the same counter shaft, the shaft K, being adjusted parallel or about parallel with A', to admit of such result. The stuf Y, from which the heads are cut is placed between the wheels G, X, and the operator then depresses the treadle C, and thereby forces the wheel G, against the stuff, the spurs c, penetrating the same and rmly clamping it. As the treadle C, is depressed and the stuff clamped, the rests or gages F', of course move out from below the stuff. As the shaft F, `rotates the stuff and wheels G, X, rotate Vwith it and the operator by actuating the togofle E', moves the saw B', toward the stu and cuts the head.

The saw B', has two movements a rotating one and a vibrating one in a direction longitudinally with its aXis. This latter movement is given the saw by means of the spring U, in'connection with the Vcam V, operating against the slide Q, which in consequence of being connected with the bar P,

causes the bar S, to be actuated in one direction the spring moving the bar S, in the other direction. This vibrating movement ofthe saw causes the' head to be cut in elliptical -form corresponding to the elliptical form of the cam V, and the stud is so clamped that the direction of its grain will be at right angles to the major diameter of thecamV. By this arrangement the'heads will be widerV in a direction transversely with their grain as indicated by the dotted line Z, Fig. 2, and the shrinking of the heads fully compensated for, it being understood that wood does not shrink, at least not appreciably, in a direction longitudinally with its fibers.

In order to vary very slightly the diameter of the heads so that each may t the articular end of the cask or barrel assigned or it, the screw R, only requires to be slightly turned in order to vary the position of the bar S, and yconsequently that of the saw.

The heads may be cut of diiferent diameters to suit different sized barrels or casks by adjusting Vthe plate Z, longitudinally and then adjusting the fulcrum g, either outwardfrom the wheel X, or toward it Vby turning the plate D', so asto Vpermit the saw B', to have a proper relativeposition with its work. This will be understood by referring to the diagram Fig. 4, in which b", represents the stuff and B', the saw. The black representation of the saw shows it cutting from the center cx, and the red representation as cutting from the center cxx, the latter adjustment being for smaller heads. The toggle E', is adjusted to suit the varying position of the plate Z, by moving the rodt, in the slot u.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

V1. Giving the saw a vibrating movement in a direction longitudinally'with its axis and 'simultaneously with its rotation by means of the cam V, bars P, S, and spring U, or their equivalents, for the purpose of cutting the heads in oval or elliptical form to compensate for the shrinking of the same substantially as setforth.

2. The arrangement of the slide S, cam V, and screw R, substantially as shown for the purpose of varying in a slight degree the diameter of the heads as set forth.

3. The arrangement of the plate Z, and circular plate D', the former being attached to the latter by the bolt g", passing through shaft K, in a pro er relative position with the slot 1, and the plate D, attached eccenthe saw-shaft A, or the purpose of driving 10 trically to the bar S, as and for the purposes both said shafts from one and the same specified. center shaft.

4. Connecting the shaft K, With the bar J, H. L. MGNISH. which is fitted loosely on the tubular up- Witnesses: right f, and arranged substantially as shown I. HALL, Jr., to admit of the turning and adjusting of T. BAKER. 

